Argythamnia aphoroides

Müller Arg.

Linnaea 34: 146. 1865.

Common names: Hill country silverbush
EndemicConservation concern
Synonyms: Ditaxis aphoroides (Müller Arg.) Pax
Treatment appears in FNA Volume 12. Treatment on page 174. Mentioned on page 173.

Herbs, perennial, monoecious or dioecious, to 5 dm. Stems erect to ascending, hairy, hairs malpighiaceous. Leaves: stipules deciduous, linear-lanceolate, to 1 mm, margins not glandular; petiole absent; blade elliptic, 1.5–4 × 0.6–2 cm, margins entire, without glands, surfaces hairy, hairs malpighiaceous. Inflorescences unisexual, 3–8 cm; bracts linear-lanceolate, 2–4.5 mm, margins without glands. Flowers without pink dye when wetted. Staminate flowers: sepals lanceolate to narrowly elliptic, 4–5.5 × 1.1–1.4 mm; petals cuneate-elliptic to cuneate-obovate, 3.3–4 × 1.6–3 mm, free from androphore; nectary glands oblong, 0.4–0.5 × 0.3–0.4 mm, adnate to androphore, glabrous; stamens 10, staminodes 0. Pistillate flowers: sepals lanceolate to elliptic, 6–7 × 1.7–3.2 mm, without glands; petals 0 or 5, linear, 0–1.7 mm; nectary glands oblong, 0.5 × 0.7 mm, glabrous; ovary tomentose to lanulose; styles 1.5–3 mm, tomentose; stigmas flattened. Capsules 7–9 mm, tomentose to lanulose. Seeds 3.7–5 mm, smooth, lightly tuberculate, or striate.


Phenology: Flowering Jan–Jul.
Habitat: Bluestem-grama grasslands, oak woodlands, calcareous, often rocky, clay or loam soils.
Elevation: 300–600 m.

Discussion

Argythamnia aphoroides is restricted to the Edwards Plateau.

Selected References

None.

Lower Taxa

None.
... more about "Argythamnia aphoroides"
Yocupitzia Ramírez-Amezcua +
Müller Arg. +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
unlobed +
0.6cm;2cm +
linear-lanceolate +
tomentose +  and lanulose +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Hill country silverbush +
300–600 m. +
pistillate +  and staminate +
subtending +
Bluestem-grama grasslands, oak woodlands, calcareous, often rocky, clay or loam soils. +
malpighiaceous +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
persistent +  and deciduous +
palmate +  and pinnate +
crenate +, repand +  and subentire +
0.5 cm5 mm <br />0.005 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
extrastaminal +
tomentose;lanulose +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rudimentary +
0 cm0 mm <br />0 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering Jan–Jul. +
3(-4)-carpellate +
striate +, tuberculate +  and smooth +
globose +  and ovoid +
distinct +
6mm (?) +  and 7mm (?) +
lanceolate +  and elliptic +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Endemic +  and Conservation concern +
erect +  and ascending +
flattened +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
connate +  and distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Ditaxis aphoroides +
Argythamnia aphoroides +
Argythamnia +
species +
dioecious +  and monoecious +